private double TestRay(Ray ray, Scene scene)
{
ISect isect = MinIntersection(ray, scene);
if (ISect.IsNull(isect))
{
return(0);
}
return(isect.Dist);
}
private Color TraceRay(Ray ray, Scene scene, int depth)
{
ISect isect = MinIntersection(ray, scene);
if (ISect.IsNull(isect))
{
return(Color.Background);
}
return(Shade(isect, scene, depth));
}
private ISect MinIntersection(Ray ray, Scene scene)
{
ISect min = ISect.Null;
foreach (SceneObject obj in scene.Things)
{
ISect isect = obj.Intersect(ray);
if (!ISect.IsNull(isect))
{
if (ISect.IsNull(min) || min.Dist > isect.Dist)
{
min = isect;
}
}
}
return(min);
}